CN114300876B

CN114300876B - Conductive cables, connecting devices and connection assemblies

Info

Publication number: CN114300876B
Application number: CN202210042186.1A
Authority: CN
Inventors: 王旭; 邹作涛; 曾腾飞; 彭建民
Original assignee: Shanghai Aerospace Science and Industry Appliance Co Ltd
Current assignee: Shanghai Aerospace Science and Industry Appliance Co Ltd
Priority date: 2022-01-14
Filing date: 2022-01-14
Publication date: 2025-10-21
Anticipated expiration: 2042-01-14
Also published as: CN114300876A

Abstract

The application provides a conductive cable, a connecting device and a connecting assembly. The conductive cable is used for being electrically connected to the grounding plate of the substrate through the conductive base, and comprises a cable single body, a signal terminal, a grounding shielding piece and an insulating plastic packaging component, wherein the cable single body comprises a signal wire, a cable coating body and a conductive copper foil, the cable coating body is coated on the signal wire, the conductive copper foil is coated on the cable coating body, a part of the signal wire is exposed on the periphery of the cable coating body, the signal terminal is abutted to the signal wire exposed on the periphery of the cable coating body, the grounding shielding piece is abutted to the conductive copper foil, the insulating plastic packaging component is at least coated on the abutting part of the grounding shielding piece and the conductive copper foil, the abutting part of the signal terminal and the signal wire, and the part of the grounding shielding piece are exposed on the insulating plastic packaging component. Compared with the traditional mode that the connection part of the cable assembly and the circuit board is in butt joint through the terminal, reliable signal transmission between the conductive cable and the substrate can be realized.

Description

Conductive cable, connecting device and connecting assembly

Technical Field

The invention relates to the technical field of conductive connection, in particular to a conductive cable, a connecting device and a connecting assembly.

Background

The cable assembly is connected with the circuit board, namely the substrate, and is conductive, so that signal transmission between the cable assembly and the circuit board is realized. The connection part of the cable assembly and the circuit board needs to be grounded so as to realize closed loop transmission of signals. However, the connection between the cable assembly and the circuit board is grounded by the contact of the terminal, which has a problem of poor grounding reliability, i.e., low tolerance.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a reliably grounded conductive cable, a connecting device and a connecting assembly.

The aim of the invention is realized by the following technical scheme:

a conductive cable for electrically connecting to a ground plane of a substrate through a conductive pad, the conductive cable comprising:

The cable monomer comprises a signal wire, a cable coating body and a conductive copper foil, wherein the cable coating body is coated on the signal wire, the conductive copper foil is coated on the cable coating body, and part of the signal wire is exposed at the periphery of the cable coating body;

A signal terminal which is abutted against the signal wire exposed out of the periphery of the cable coating body;

A ground shield in contact with the conductive copper foil;

the insulation plastic coating component is at least respectively coated at the joint of the grounding shielding piece and the conductive copper foil and the joint of the signal terminal and the signal wire, and the part of the signal terminal and the part of the grounding shielding piece are exposed out of the insulation plastic coating component, the signal terminal exposes in the part of the insulating plastic coating component and is used for elastically abutting against the signal contact piece of the substrate, and the grounding shielding piece exposes in the part of the insulating plastic coating component and is used for being connected with the conductive seat.

In one embodiment, the signal terminal is soldered to the signal line at the junction thereof.

In one embodiment, the ground shield is formed with a bare window, and the soldered portion of the signal terminal and the signal line is disposed corresponding to the bare window.

In one embodiment, the insulating overmold assembly is partially molded between the ground shield and the signal terminals.

In one embodiment, a first hollow groove is formed in a position, adjacent to the bare hollow window, of the insulating plastic coating component, and the first hollow groove is arranged corresponding to the bare hollow window.

A connecting device comprises a conductive seat and the conductive cable in any embodiment, wherein the conductive seat is used for being electrically connected with a grounding plate of a substrate, and the part of a grounding shielding piece exposed out of the insulating plastic-coated component is connected with the conductive seat.

In one embodiment, the conductive seat is provided with a plugging slot, the conductive cable is plugged in the plugging slot, and the part of the grounding shielding piece exposed out of the insulating plastic-coated component is abutted against the inner wall of the plugging slot.

In one embodiment, the connecting device further comprises a conductive spring, wherein the conductive spring is connected to the conductive seat and is used for abutting against the grounding surface of the substrate, and/or,

The conductive seat is also provided with a connecting groove communicated with the inserting groove, the grounding shielding piece is provided with a limiting part, and the limiting part is clamped into the connecting groove.

In one embodiment, the connecting device further includes a conductive spring, the conductive spring is connected to the conductive base, and the conductive spring is used for being welded to the ground plane of the substrate.

The connecting assembly comprises a substrate and the connecting device of any embodiment, wherein the substrate is provided with a signal contact piece and a ground plate, the part of the signal terminal exposed out of the insulating plastic-coated component is elastically abutted to the signal contact piece, and the conductive elastic sheet is electrically connected to the ground plate.

Compared with the prior art, the invention has at least the following advantages:

According to the conductive cable, the signal terminal is abutted with the signal wire exposed out of the periphery of the cable cladding body, so that signal transmission is realized, the grounding shielding piece is abutted with the conductive copper foil, the insulating plastic-coated component is at least respectively coated at the abutting part of the grounding shielding piece and the conductive copper foil, the abutting part of the signal terminal and the signal wire, the part of the signal terminal and the part of the grounding shielding piece are exposed out of the insulating plastic-coated component, the part of the signal terminal exposed out of the insulating plastic-coated component is elastically abutted with the signal contact piece of the substrate, the signal wire is electrically connected with the signal contact piece through the signal terminal, the conductive copper foil is electrically connected with the conductive seat through the grounding shielding piece, and the conductive seat is electrically connected with the grounding plate.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a connection assembly according to an embodiment;

FIG. 2 is a schematic view of the connection assembly of FIG. 1 from another perspective;

FIG. 3 is a cross-sectional view taken along line A-A of the connection assembly of FIG. 2;

FIG. 4 is an enlarged partial schematic view of the connection assembly of FIG. 3;

FIG. 5 is an enlarged partial schematic view of the connection assembly of FIG. 4;

FIG. 6 is an exploded view of the connection assembly of FIG. 1 from another perspective;

FIG. 7 is an enlarged schematic view of the connection assembly of FIG. 6 at B;

FIG. 8 is a schematic diagram of a conductive cable of the connection device of the connection assembly shown in FIG. 1;

FIG. 8a is a schematic view of a partial enlarged structure of the conductive cable shown in FIG. 8;

FIG. 9 is an exploded view of the conductive cable of FIG. 8 a;

FIG. 10 is a schematic diagram of another view of the conductive cable of FIG. 8 a;

FIG. 11 is a schematic view of a partial structure of the conductive cable shown in FIG. 10;

Fig. 12 is a schematic structural view of a conductive socket of the connection device of the connection assembly shown in fig. 7.

Detailed Description

In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The application provides a conductive cable which is electrically connected to a grounding plate of a substrate through a conductive seat, wherein the conductive cable comprises a cable single body, a signal terminal, a grounding shielding piece and an insulating plastic-coated component, the cable single body comprises a signal wire, a cable coating body coated on the signal wire and a conductive copper foil coated on the cable coating body, a part of the signal wire is exposed on the periphery of the cable coating body, the signal terminal is abutted to the signal wire exposed on the periphery of the cable coating body, the grounding shielding piece is abutted to the conductive copper foil, the insulating plastic-coated component is at least coated on the abutting part of the grounding shielding piece and the conductive copper foil respectively, a part of the signal terminal and a part of the grounding shielding piece are exposed on the insulating plastic-coated component, the part of the signal terminal exposed on the insulating plastic-coated component is used for being elastically abutted to the signal contact plate of the substrate, and the grounding shielding piece is exposed on the insulating plastic-coated part of the insulating plastic-coated component is used for being connected to the conductive seat.

In order to better understand the technical scheme and beneficial effects of the present application, the following describes the present application in further detail with reference to specific embodiments:

As shown in fig. 1 and 2, the connection assembly 10 of an embodiment includes a substrate 100 and a connection device 200. Referring to fig. 3 to 5, the substrate 100 is provided with a signal contact 110 and a ground plane 120, the connection device 200 is connected to the substrate 100, and the connection device 200 is respectively connected with the signal contact 110 and the ground plane 120 for signal transmission. In one embodiment, the connection device 200 includes a conductive base 210 and a conductive cable 220, the conductive cable 220 is mounted on the conductive base 210, and a ground end of the conductive cable 220 is reliably abutted against the conductive base 210 to be grounded, the conductive base 210 is electrically connected to the ground plane 120 of the substrate 100, so that the conductive cable 220 is electrically connected to the ground plane 120 through the conductive base 210, and reliable grounding of the conductive cable 220 and the substrate 100 is achieved. The signal end of the conductive cable 220 is abutted against the signal contact 110, so that the conductive cable 220 and the substrate 100 can reliably transmit signals.

As shown in fig. 5 to 7, in one embodiment, the conductive cable 220 is used to be electrically connected to the ground plane 120 of the substrate 100 through the conductive pad 210. The conductive cable 220 includes a cable cell 221, a signal terminal 223, a ground shield 225, and an insulating overmold assembly 227. The cable unit 221 includes a signal wire 221a, a cable coating 221b coated on the signal wire 221a, and a conductive copper foil 221c coated on the cable coating 221b, where a portion of the signal wire 221a is exposed at the periphery of the cable coating 221 b. The signal terminal 223 is in contact with the signal line 221a exposed at the outer periphery of the cable cover 221b, and the signal terminal 223 is electrically connected to the signal line 221 a. The ground shield 225 is abutted against the conductive copper foil 221c, and the ground shield 225 is electrically connected to the conductive copper foil 221 c.

Further, the insulating plastic coated component 227 is at least coated on the contact position between the grounding shield 225 and the conductive copper foil 221c, and the contact position between the signal terminal 223 and the signal line 221a, and both the part of the signal terminal 223 and the part of the grounding shield 225 are exposed out of the insulating plastic coated component 227. The portion of the signal terminal 223 exposed to the insulation plastic coated component 227 elastically contacts the signal contact sheet 110, so that the signal terminal 223 is electrically connected with the signal contact sheet 110. The ground shield 225 is exposed at the location of the insulating overmold assembly 227 for connection to the conductive mount 210 such that the ground shield 225 is electrically connected to the conductive mount 210.

In the above-mentioned conductive cable 220, since the signal terminal 223 is abutted against the signal wire 221a exposed at the periphery of the cable covering body 221b to realize signal transmission, and since the ground shield is abutted against the conductive copper foil 221c, and the insulating plastic coated component 227 is at least coated on the abutting position of the ground shield 225 and the conductive copper foil 221c, and the abutting position of the signal terminal 223 and the signal wire 221a, respectively, the portions of the signal terminal 223 and the ground shield 225 are exposed on the insulating plastic coated component 227, and the portion of the signal terminal 223 exposed on the insulating plastic coated component 227 is elastically abutted against the signal contact piece 110 of the substrate 100, so that the signal wire 221a is electrically connected to the conductive base 210 through the signal terminal 223 and the signal contact piece 110, and the conductive base 210 is electrically connected to the ground plate 120 through the ground shield 225.

In order to firmly connect the signal terminal 223 to the signal line 221a and to reliably electrically connect the signal terminal 223 to the signal line 221a, as shown in fig. 5, in one embodiment, the contact portion between the signal terminal 223 and the signal line 221a is welded, so that the signal terminal 223 is firmly connected to the signal line 221a and the signal terminal 223 is reliably electrically connected to the signal line 221 a.

As shown in fig. 5 and 7, in one embodiment, the ground shield 225 is formed with a bare window 2251, and the welding position between the signal terminal 223 and the signal line 221a is disposed corresponding to the bare window 2251, so that the welding auxiliary jig supports the signal terminal 223 and the signal line 221a through the bare window 2251 during the welding process of the signal terminal 223 and the signal line 221a, thereby improving the welding efficiency and reliability of the signal terminal 223 and the signal line 221 a.

In order to fix and support both the ground shield and the signal terminal 223 by the insulating plastic coated component, and to reliably space the ground shield and the signal terminal 223, in one embodiment, the insulating plastic coated component 227 is partially formed between the ground shield and the signal terminal 223, so that both the ground shield and the signal terminal 223 by the insulating plastic coated component are fixed and supported, and the ground shield and the signal terminal 223 are reliably spaced.

As shown in fig. 8 and 8a, in one embodiment, a first hollow slot 2272 is formed in a portion of the insulating plastic coated component 227 adjacent to the bare window 2251, and the first hollow slot 2272 is disposed corresponding to the bare window 2251, so as to reduce the impedance of the conductive cable 220 generated during the signal transmission process, and improve the signal transmission speed of the conductive cable 220. Referring to fig. 10, further, a second hollow slot 2274 is formed at a position of the insulating plastic coated component 227 away from the bare window 2251, and the second hollow slot 2274 and the first hollow slot 2272 are respectively located at two sides of the signal terminal 223, so that impedance of the conductive cable 220 generated in a signal transmission process is further reduced, and meanwhile, a signal transmission speed of the conductive cable 220 is improved.

As shown in fig. 4 and fig. 5, in one embodiment, the conductive base 210 is provided with a plugging slot 212, the conductive cable 220 is plugged into the plugging slot 212, and the grounding shield 225 is exposed at the portion of the insulation plastic-coated component 227 and abuts against the inner wall of the plugging slot 212, so that the conductive cable 220 is connected with the conductive base 210 in a plugging manner, so that the conductive cable 220 is detached and replaced, and meanwhile, the grounding shield 225 of the conductive cable 220 is reliably abutted against the conductive base 210 to be grounded. In this embodiment, the number of the conductive cables 220 and the plugging slots 212 is multiple, and the plurality of conductive cables 220 are plugged into the plurality of plugging slots 212 in a one-to-one correspondence, and each conductive cable 220 is plugged into the corresponding plugging slot 212 of the conductive base 210, so as to realize independent disassembly and replacement of each conductive cable 220, which is more convenient than the conventional connection assembly 10.

As shown in fig. 4, 5 and 7, in one embodiment, the connection device 200 further includes a conductive spring 230, the conductive spring 230 is connected to the conductive base 210, and the conductive spring 230 is used to abut against the ground plane 120 of the substrate 100, so that the conductive base 210 can be electrically connected to the ground plane 120 through the conductive spring 230, so as to achieve reliable grounding of the conductive base 210. In the present embodiment, the ground shield 225 is disposed in the socket 212 and abuts against the conductive base 210, so that the ground shield 225 is electrically connected to the ground plane 120 through the conductive base 210 and the conductive spring plate 230. Specifically, the conductive base 210 is abutted to the ground plate 120, so that the conductive base 210 can be directly grounded to the ground plate 120, and can be electrically grounded to the ground plate 120 through the conductive spring sheet 230, thereby avoiding the problem of grounding defect caused by the insufficient abutment of the conductive base 210 and the ground plate 120, and improving the grounding reliability of the connecting device 200. And/or, in one embodiment, the conductive base 210 is further provided with a connection slot 214 that is communicated with the plugging slot 212, the grounding shield 225 is provided with a limiting portion 225a, and the limiting portion 225a is clamped into the connection slot 214, so that the grounding shield 225 and the conductive base 210 are reliably assembled in place, and meanwhile, the grounding shield 225 and the conductive base 210 are reliably electrically connected, so as to achieve reliable grounding. In one embodiment, the limiting part 225a is provided with a limiting tab 2252, and the limiting tab 2252 is located at the outer side of the conductive base 210 and abuts against the conductive base 210, so that the problem that the limiting tab 2252 slips through the connecting slot 214 is avoided, and the limiting part 225a is reliably and limitedly connected to the periphery of the conductive base 210.

In order to make the limiting portion 225a more reliably and limitedly connected to the periphery of the conductive base 210, as shown in fig. 4, further, an included angle exists between the extending direction of the connecting slot 214 and the plane of the ground plane 120, that is, the extending direction of the connecting slot 214 is an inclined slot body, so that the limiting portion 225a is more reliably and limitedly connected to the periphery of the conductive base 210. In this embodiment, the ground shield 225 includes a ground shield main body 225b and a limiting portion 225a, where the ground shield main body 225b and the limiting portion 225a are connected, and the connecting portion is bent, so that the limiting portion 225a is more reliably and limitedly connected to the periphery of the conductive base 210. Specifically, the bending angle θ at the connection between the grounding shield main body 225b and the limiting portion 225a may be 110 degrees to 170 degrees. For example, the bending angle at the connection between the grounding shield main body 225b and the limiting portion 225a is 120 degrees, so that the limiting portion 225a is more reliably and limitedly connected to the periphery of the conductive base 210.

As shown in fig. 4, 5 and 7, in one embodiment, the connection device 200 further includes a conductive spring 230, the conductive spring 230 is connected to the conductive base 210, and the conductive spring 230 is used for being welded to the ground plane 120 of the substrate 100, so that the conductive spring 230 is fixed on the ground plane 120, and further the conductive base 210 can be reliably electrically connected to the ground plane 120 through the conductive spring 230, so as to achieve reliable grounding of the conductive base 210. In the present embodiment, the conductive spring sheet 230 is welded to the ground plane sheet 120 by spot welding. It is understood that in other embodiments, the conductive spring plate 230 may be welded to the ground plane 120 by other welding methods.

As shown in fig. 4, 5 and 7, in one embodiment, the conductive spring 230 includes a spring connection strip 232 and at least two spring units 234, each spring unit 234 is connected to the spring connection strip 232, the conductive base 210 is provided with two spring units 234 at a bottom position where the socket 212 is formed, the socket 212 is located between the two spring units 234, the spring connection strip 232 is fixedly connected to the conductive base 210, and each spring unit 234 is welded to the ground plate 120, so that the conductive spring 230 is welded to the ground plate 120. Because the inserting groove 212 is located between the two spring piece units 234, and each spring piece unit 234 is welded to the ground plane 120, the conductive spring piece 230 is reliably grounded by being welded to the ground plane 120. In the present embodiment, the number of the conductive cables 220 and the inserting grooves 212 is 2M, the 2M conductive cables 220 are arranged in two rows, the number of each row of conductive cables 220 is M, the number of the corresponding elastic sheet monomers 234 is m+1, i.e. one elastic sheet monomer 234 is disposed between two adjacent conductive cables 220, so that each conductive cable 220 can be reliably grounded. The elastic sheet connecting strip 232 is welded on the conductive base 210, so that the elastic sheet connecting strip 232 and the conductive base 210 are reliably connected and fixed, and meanwhile, the elastic sheet connecting strip 232 and the conductive base 210 are reliably and electrically connected.

As shown in fig. 4, 5 and 7, further, each spring element 234 includes a first bending portion 234a and a second bending portion 234b connected to each other, the second bending portion 234b is connected to the spring connection strip 232, and the first bending portion 234a and the second bending portion 234b are welded to the ground plane sheet 120, so that each spring element 234 is welded to the ground plane sheet 120, and thus, two welding positions of each spring element 234 and the ground plane sheet 120 are provided, and each spring element 234 is better welded and fixed to the ground plane sheet 120. In this embodiment, two elastic sheet units 234 are disposed on two sides of each conductive cable, so that there are two welding points at the welding positions between two sides of each conductive cable and the ground plane sheet 120.

In order to make the conductive spring 230 better contact with the ground plane 120 for grounding, as shown in fig. 4, 5 and 7, further, the conductive spring 230 further includes a reinforcing spring 236, the reinforcing spring 236 is fixedly connected to the spring connecting strip 232, and the reinforcing spring 236 contacts with the ground plane 120, so that the conductive base 210 can be electrically connected to the ground plane 120 through the spring connecting strip and the reinforcing spring 236. In the present embodiment, the reinforced elastic sheet 236 is bent, and the reinforced elastic sheet 236 is welded to the ground plane sheet 120, so that the reinforced elastic sheet 236 better abuts against the ground plane sheet 120. Specifically, the number of the reinforcing spring plates 236 is two, and the two reinforcing spring plates 236 are arranged side by side, so that six adjacent grounding points at the plugging position of each conductive cable 220 and the conductive base 210 are in total, that is, the conductive spring plates 230 are welded to the grounding plate 120 at the positions adjacent to each conductive cable 220 through six welding points, so that six adjacent grounding points at the plugging position of each conductive cable 220 and the conductive base 210 are in total, and each conductive cable 220 can be better grounded.

It is understood that in an embodiment, the cable coating 221b may be a plastic body or a rubber body or other insulator. In this embodiment, the cable coating 221b is a plastic body, so that the cable coating 221b can be better wrapped on the signal terminal 223, and meanwhile, the cable coating 221b has a better insulation effect.

As shown in fig. 10 and 11, in one embodiment, the number of signal lines 221a of each conductive cable 220 is two, and the two signal lines 221a of each conductive cable 220 constitute transmission of differential signals, so that transmission of differential signals of each conductive cable 220 is achieved. In this embodiment, the number of the signal terminals 223 and the number of the signal contact pieces 110 are two, the two signal terminals 223 are respectively abutted against the two signal lines 221a in a one-to-one correspondence manner, and the two signal terminals 223 are respectively abutted against the corresponding signal contact pieces 110, so as to realize differential signal transmission. The two signal wires 221a are wrapped with the cable wrapping bodies 221b, and the conductive copper foil 221c is wrapped on the two cable wrapping bodies 221b respectively, that is, the cable wrapping bodies 221b corresponding to the two signal wires 221a are wrapped by the same conductive copper foil 221c, so that the conductive cable 220 can be reliably grounded and reflowed in the differential signal transmission process, and meanwhile, peripheral signal interference can be reliably shielded, and further, the differential signal transmission is more stable. Specifically, the number of the signal wires 221a and the number of the cable covers 221b are two, and the two cable covers 221b are respectively covered on the corresponding signal wires 221a. The conductive copper foil 221c is wrapped around the two cable wraps 221b, respectively, so as to realize transmission of differential signals. The portion of each signal wire 221a is exposed at the periphery of the cable coating body 221b, and the two signal terminals 223 are respectively abutted against the corresponding signal wires 221a exposed at the periphery of the cable coating body 221b, so that the two signal terminals 223 are respectively electrically connected with the corresponding signal wires 221a.

As shown in fig. 6 and 7, further, the conductive base 210 is provided with a connection protruding column 216 adjacent to the bottom of the substrate 100, the substrate 100 is provided with a connection hole 102, the connection protruding column 216 is located in the connection hole 102 and is inserted into the substrate 100, so as to play a role in connection and fixation, prevent the conductive base 210 from moving away relative to the substrate 100, enable the conductive base 210 to reliably abut against the grounding contact piece, and enable the signal terminal 223 to reliably abut against the signal contact piece 110. In this embodiment, the number of the connecting studs 216 and the connecting holes 102 is two, and the two connecting studs 216 are respectively located in the two connecting holes 102. The two connecting studs 216 are connected in parallel with the plurality of conductive wires 220 in a side-by-side direction. In order to make the contact surface of the conductive base 210 and the substrate 100 on the same plane, further, a positioning protrusion 218 is further disposed on the conductive base 210 adjacent to the bottom of the substrate 100, and the substrate 100 is provided with a positioning hole 104. The number of the positioning convex columns 218 and the number of the positioning holes 104 are two, and the two positioning convex columns 218 are respectively inserted into the two positioning holes 104. Since the number of the connection convex columns 216 and the connection holes 102 is two, the two connection convex columns 216 are respectively located in the two connection holes 102, and the two positioning convex columns 218 are respectively inserted into the two positioning holes 104, so that the conductive base 210 is positioned on the substrate 100, the parallel directions of the connecting wires of the two connection convex columns 216 and the plurality of conductive cables 220 are parallel to each other, the arrangement directions of the two positioning convex columns 218 and the arrangement directions of the two connection convex columns 216 are parallel to each other, so that the abutting surfaces of the conductive base 210 and the substrate 100 are located on the same plane, and the connection precision of the conductive base 210 and the substrate 100 is higher, so that the conductive base 210 and the grounding abutting sheet are more reliably abutted, and meanwhile, the signal terminal 223 and the signal contact sheet 110 are reliably abutted.

As shown in fig. 8a, further, the outer wall of the grounding shield 225 is convexly provided with an abutment protrusion 225c, and the abutment protrusion 225c abuts against the inner wall of the insertion slot 212, so that the grounding shield 225 elastically abuts against the conductive base 210, and further, the conductive cable 220 is better inserted into the insertion slot 212, and the portion of the grounding shield 225 exposed out of the insulation plastic package 227 better abuts against the inner wall of the insertion slot 212. In this embodiment, the ground shield 225 may be a conductive metal member, and the number of the abutment protrusions 225c is two, and the two abutment protrusions 225c are respectively located at two sides of the ground shield 225.

As shown in fig. 7 and 12, further, the conductive base 210 may be a metal base, so that the conductive base 210 has better conductive performance, and meanwhile, the conductive base 210 has better structural strength. In order to make the conductive cable 220 reliably plugged into the plugging slot 212, the plugging slot 212 has a chute structure, so that the conductive cable 220 is inserted into the plugging slot 212 and is in contact with the conductive base 210 in a larger area. Further, the conductive base 210 includes a conductive base body 210a and a plugging extension board 210b, the plugging slot 212 is formed in the conductive base body 210a, the plane of the extending direction of the plugging extension board 210b is parallel to the extending direction of the plugging slot 212, the plugging extension board 210b and the inner wall of the plugging slot 212 are formed with plugging extension ports 211, the plugging extension ports 211 are communicated with the plugging slot 212, so that the conductive cable 220 is inserted into the plugging slot 212 through the plugging extension ports 211, and the grounding shield 225 is respectively abutted against the plugging extension board 210b and the conductive base body 210a, so that the area of the conductive cable 220 abutting against the conductive base 210 is larger.

As shown in fig. 7 and 12, in one embodiment, the number of the conductive cables 220 and the plugging slots 212 is plural, and the plurality of conductive cables 220 are plugged into the plurality of plugging slots 212 in a one-to-one correspondence manner, so as to realize transmission of a plurality of different differential signals. In the present embodiment, the plurality of plugging slots 212 are distributed in two rows, and accordingly, the plurality of conductive cables 220 are assembled on the conductive base 210 in two rows. The number of the plugging extension plates 210b is two, wherein one plugging extension plate 210b is arranged corresponding to one row of plugging slots 212, and the other plugging extension plate 210b is arranged corresponding to the other row of plugging slots 212. Specifically, the number of the conductive cables 220 and the plugging slots 212 is 2M, the 2M conductive cables 220 are plugged into the 2M plugging slots 212 in a one-to-one correspondence, the 2M plugging slots 212 are distributed in two rows, one plugging extension plate 210b is arranged corresponding to one row of the plugging slots 212, the other plugging extension plate 210b is arranged corresponding to the other row of the plugging slots 212, and each row of the plugging slots 212 is provided with M plugging slots 212. In order to make the M conductive cables 220 separately disposed at intervals and reliably inserted into the corresponding inserting grooves 212, further, M-1 partition plates 210c are disposed between each inserting extension plate 210b and the conductive base body 210a, each partition plate 210c is separately connected with the inserting extension plate 210b and the conductive base body 210a, so that M inserting extension openings 211 are formed between each inserting extension plate 210b and the conductive base body 210a, the M inserting extension openings 211 are respectively in one-to-one correspondence with the M inserting grooves 212, each conductive cable 220 is respectively inserted into the corresponding inserting extension opening 211 and the corresponding inserting groove 212, and the M conductive cables 220 are separately disposed at intervals and reliably inserted into the corresponding inserting grooves 212.

As shown in fig. 7, in one embodiment, the ground plane 120 is provided with 2M avoidance ports 122,2M and 122 distributed in two rows, where the number of avoidance ports 122 in each row is M, and the M avoidance ports 122 in each row are distributed at intervals. The number of the signal contact pieces 110 is 4M, and each of the avoidance holes 122 accommodates two signal contact pieces 110 side by side. The number of the signal terminals 223 is 4M, and the 4M signal terminals 223 are respectively corresponding to the 2M conductive cables 220, that is, each two signal terminals 223 respectively collide with the two signal contact pieces 110 of the same avoidance port 122, so as to realize the transmission of two differential signals of each conductive cable 220. In the present embodiment, the ground plate 120 and the conductive base 210 are electrically grounded, and each two signal terminals 223 respectively collide with the two signal contact plates 110 of the same gap 122, so that the two differential signals of each conductive cable 220 can be reliably transmitted. It can be understood that two signal contact pads 110 are disposed in each of the avoidance holes 122, and a distance exists between the periphery of each of the avoidance holes 122 and the corresponding two signal contact pads 110, so as to avoid interference between the ground plane pad 120 and the signal contact pads 110 to affect signal transmission.

As shown in fig. 5, further, a limiting protrusion 212a is disposed on an inner wall of the plugging slot 212, and the limiting protrusion 212a abuts against the insulation plastic coated component 227, so that the conductive cable 220 is plugged into the plugging slot 212 to perform a limiting function, thereby avoiding excessive plugging of the conductive cable 220 into the plugging slot 212. In the present embodiment, one end of the grounding shield 225 adjacent to the substrate 100 is fixedly connected with the conductive base body 210a, and meanwhile, the limiting protruding strip 212a abuts against the insulating plastic coated component to perform the function of limiting connection, and simultaneously, the grounding shield 225 is tensioned and reliably abuts against the conductive base 210 to be grounded. Further, the number of the limiting protruding strips 212a is plural, and the limiting protruding strips 212a are disposed in the plugging slots 212 in a one-to-one correspondence, so that each conductive cable 220 can be reliably plugged and assembled in the plugging slot 212.

As shown in fig. 5 and 10, further, the insulating plastic package 227 is provided with a limiting groove 227a, the grounding shield main body 225b includes a shield 2252 and a bending limiting part 2254, which are connected, the shield is coated on the insulating plastic package 227, the bending limiting part 2254 is coated on the insulating plastic package 227 in a bending shape, and the bending limiting part 2254 is partially located in the limiting groove 227a, so as to play a role of fixing and limiting.

As shown in fig. 8a and 9, the insulating plastic coated component 227 further includes a first insulating coating 227a and a second insulating coating 227b, the first insulating coating 227a is at least coated at the contact position between the signal terminal 223 and the signal line 221a, and the second insulating coating 227b is coated at the contact position between the ground shield 225 and the conductive copper foil 221c and the first insulating coating 227a, so that the insulating plastic coated component 227 can be coated at the contact position between the signal terminal 223 and the signal line 221a and the contact position between the ground shield 225 and the conductive copper foil 221 c. In this embodiment, the first insulating coating 227a and the second insulating coating 227b may be plastic coating or rubber coating, so that the first insulating coating 227a and the second insulating coating 227b have better insulating properties. The limiting groove 227a is disposed on the first insulating coating 227a.

As shown in fig. 4, in one embodiment, the cable unit 221 further includes an insulation protection sleeve 221d, the insulation protection sleeve 221d is wrapped on the conductive copper foil 221c, and a portion of the conductive copper foil 221c is exposed at the periphery of the insulation protection sleeve 221d and abuts against the ground shield 225, so that the insulation protection sleeve 221d plays an insulation protection role on the conductive copper foil 221 c. In order to better coat and fix the abutting position of the grounding shield 225 and the conductive copper foil 221c by the insulating plastic-coated component, further, the second insulating coating 227b is further coated on the end portion of the insulating protective sleeve adjacent to the grounding shield 225, so that the abutting position of the grounding shield 225 and the conductive copper foil 221c is better coated and fixed by the insulating plastic-coated component. Referring to fig. 8a, further, the second insulating coating 227b is provided with a surrounding coating 2271, and the surrounding coating 2271 is respectively disposed around the contact positions of the grounding shield 225 and the conductive copper foil 221c, so that the insulating plastic-coated component better coats and fixes the contact positions of the grounding shield 225 and the conductive copper foil 221 c.

As shown in fig. 5 and 9, further, the signal terminal 223 includes a signal terminal body 223a and a contact portion 223b, the signal terminal body 223a is welded to the signal wire 221a, the insulating plastic-coated component is coated on the welding portion between the signal terminal body 223a and the signal wire 221a, and the contact portion 223b elastically contacts the signal contact piece 110, so that the contact portion 223b is electrically connected to the signal contact piece 110. In the present embodiment, the width of the signal terminal body 223a gradually decreases along the direction approaching the abutting portion 223b, so that the dielectric constants of the signal terminals 223 are different, and the conductive uniformity of the whole signal terminal 223 is better in consideration of the difference of the electrical conductivities of the portion of the signal terminal body 223a exposed outside the insulating plastic coating component and the portion coated by the insulating plastic coating component, so that the signal terminal 223 can transmit signals better. Further, the two signal wires 221a of the cable unit 221 of each conductive cable 220 are arranged in parallel, and correspondingly, the two signal terminals 223 are arranged in parallel, so that the two signal wires 221a and the two signal terminals 223 are arranged in parallel at equal intervals, the structure of the conductive cable 220 is compact, and better signal transmission can be realized.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. A connection device, comprising a conductive base and a conductive cable, wherein the conductive base is used to electrically connect to a ground plane of a substrate, and the conductive cable comprises:

A cable monomer, comprising a signal line, a cable sheath wrapped around the signal line, and a conductive copper foil wrapped around the cable sheath, wherein a portion of the signal line is exposed outside the cable sheath;

a signal terminal abutting against the signal line exposed at the periphery of the cable sheath;

a ground shielding member abutting against the conductive copper foil;

an insulating overmolded component, wherein the insulating overmolded component is at least respectively overmolded at the abutment portion between the ground shield and the conductive copper foil, and at the abutment portion between the signal terminal and the signal line, wherein portions of the signal terminal and the ground shield are both exposed from the insulating overmolded component, wherein the portion of the signal terminal exposed from the insulating overmolded component is configured to elastically abut against the signal contact piece of the substrate, and the portion of the ground shield exposed from the insulating overmolded component is connected to the conductive seat;

Conductive spring clip, the conductive spring clip is connected to the conductive seat; the conductive spring clip includes a spring clip connecting strip and at least two spring clip monomers, each spring clip monomer is connected to the spring clip connecting strip, and the conductive seat is provided with two spring clip monomers at the bottom position where the plug-in slot is opened, and the plug-in slot is located between the two spring clip monomers. The spring clip connecting strip is connected and fixed to the conductive seat, and each spring clip monomer is welded to the ground surface.

2 . The connection device according to claim 1 , wherein the signal terminal and the signal line are welded at their abutting locations.

3 . The connection device according to claim 2 , wherein the ground shielding member is formed with an open window, and a welding point between the signal terminal and the signal line is arranged corresponding to the open window.

4 . The connection device according to claim 3 , wherein the insulating overmolded component is partially formed between the ground shield and the signal terminal.

5 . The connection device according to claim 4 , wherein a first hollow groove is formed in a portion of the insulating overmolded component adjacent to the bare window, and the first hollow groove is arranged corresponding to the bare window.

6. The connection device according to claim 1, wherein the conductive seat is provided with a plug-in slot, the conductive cable is plugged into the plug-in slot, and the portion of the grounding shielding member exposed from the insulating overmolded component abuts against an inner wall of the plug-in slot.

7. The connection device according to claim 6, characterized in that

The conductive seat is further provided with a connecting groove communicated with the plug-in groove, and the grounding shielding component is provided with a limiting portion, which is snapped into the connecting groove.

8. The connection device according to claim 1, characterized in that each of the elastic sheet monomers includes a first bent portion and a second bent portion connected to each other, the second bent portion is connected to the elastic sheet connecting strip, and the first bent portion and the second bent portion are both welded to the grounding surface.

9. A connection assembly, characterized in that it comprises a substrate and a connection device according to any one of claims 1 to 8, the substrate being provided with a signal contact piece and a ground plane piece, the portion of the signal terminal exposed from the insulating overmolded component elastically abutting against the signal contact piece, and the conductive spring piece being electrically connected to the ground plane piece.